SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 11-K Annual Report Pursuant to Section 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 30, 1998 Commission File No. 0-24612 ADTRAN, INC. 401(k) EMPLOYEE SAVINGS PLAN ADTRAN, Inc. (Exact name of Registrant as specified in its charter) Delaware (63-0918200) (State of incorporation) (I.R.S. Employer Identification Number) 901 Explorer Boulevard, Huntsville, Alabama 35806-2807 (Address of principal executive offices, including zip code) (256) 963-8000 (Registrant's telephone number, including area code) Required Information: The Plan is subject to the Employee Retirement Income Security Act of 1974 ("ERISA"). Therefore, in lieu of the requirements of Items 1-3 of Form 11-K, the financial statements and schedules of the Plan for the two fiscal years ended December 31, 1998 and 1997, which have been prepared in accordance with the financial reporting requirements of ERISA, and the consent of Coopers and Lybrand, are filed as a part of this annual report: Signatures: Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the Plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized. ADTRAN, Inc. 401(k) EMPLOYEE SAVINGS PLAN /s/ John R. Cooper July 01, 1998 - ------------------ ------------- John R. Cooper Date Vice President - Administration and Finance and Chief Financial Officer ADTRAN, Inc. 401(k) Employee Savings Plan Financial Statements and Supplemental Schedules For The Years Ended December 31, 1998 and 1997 ADTRAN, Inc. 401(k) Employee Savings Plan Table of Contents Pages Report of Independent Accountants 1 Financial Statements: Statements of Net Assets Available for Plan Benefits December 31, 1998 and 1997 2 Statement of Changes in Net Assets Available for Plan Benefits for the year ended December 31, 1998 3 Notes to Financial Statements 4 - 13 Supplemental Schedules: *Item 27a - Schedule of Assets Held for Investment Purposes as of December 31, 1998 14 *Item 27d - Schedules of Reportable Transactions for the year ended December 31, 1998 15 - 16 * Refers to item number in Form 5500 (Annual Return/Report of Employee Benefit Plan) for plan year ended December 31, 1998. Report of Independent Accountants To the Board of Directors ADTRAN, Inc. 401(k) Employee Savings Plan Huntsville, Alabama We have audited the accompanying statements of net assets available for plan benefits of ADTRAN, Inc. 401(k) Employee Savings Plan (the Plan) as of December 31, 1998 and 1997, and the related statement of changes in net assets available for plan benefits for the year ended December 31, 1998. These financial statements are the responsibility of the Plan's management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits in accordance with generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements referred to above present fairly, in all material respects, the net assets available for plan benefits of the Plan as of December 31, 1998 and 1997, and the changes in net assets available for plan benefits for the year ended December 31, 1998 in conformity with generally accepted accounting principles. Our audit of the Plan's financial statements as of and for the year ended December 31, 1998 was performed for the purpose of forming an opinion on the basic financial statements taken as a whole. The supplemental schedules of the Plan are presented for the purpose of additional analysis and are not a required part of the basic financial statements, but are supplementary information required by the Department of Labor's Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. The supplemental schedules have been subjected to the auditing procedures applied in the audit of the basic financial statements and, in our opinion, are fairly stated in all material respects in relation to the basic financial statements taken as a whole. June 28, 1999 1 ADTRAN, Inc. 401(k) Employee Savings Plan Statements of Net Assets Available for Plan Benefits December 31, 1998 and 1997 1998 1997 Investments $19,684,006 $14,486,481 Contributions receivable: Employer 13,068 33,775 Employee 36,471 99,966 ----------- ----------- Net assets available for plan benefits $19,733,545 $14,620,222 =========== =========== The accompanying notes are an integral part of these financial statements. 2 ADTRAN, Inc. 401(k) Employee Savings Plan Statement of Changes in Net Assets Available for Plan Benefits for the year ended December 31, 1998 Investment income: Dividends and interest $ 241,858 Net appreciation in fair value of investments 1,568,869 ----------- Total investment income 1,810,727 ----------- Contributions: Employee contributions 2,701,620 Rollover proceeds 665,407 Employer contributions 906,798 ----------- Total contributions 4,273,825 ----------- Total additions 6,084,552 ----------- Benefits paid 963,204 Administrative expenses 8,025 ----------- Total deductions 971,229 ----------- Net increase 5,113,323 Net assets available for plan benefits: Beginning of year 14,620,222 ----------- End of year $19,733,545 =========== The accompanying notes are an integral part of these financial statements. 3 ADTRAN, Inc. 401(k) Employee Savings Plan Notes to Financial Statements 1. Description of Plan The following brief description of the ADTRAN, Inc. 401(k) Employee Savings Plan (the Plan) is provided for general information only. Participants should refer to the plan agreement for more complete information. General - ADTRAN, Inc. (the Company and the Employer) formed the Plan effective January 1, 1990 to provide certain retirement, death, and disability benefits for its employees. The Plan is a defined contribution plan subject to the provisions set forth in the Employee Retirement Income Security Act of 1974 (ERISA) and is funded by discretionary employee and employer contributions. The plan assets are held by The Mutual Life Insurance Company of New York (the Custodian) which executes investment transactions, receives the plan contributions, credits participants' individual accounts, and pays benefits to participants and their beneficiaries in accordance with the provisions of the Plan. The Plan was amended, effective July 1, 1997, to allow the Company's common stock to be purchased by the Plan. In conjunction with this amendment, the Company filed a Form S-8 on June 30, 1997 registering 70,103 shares of the Company's common stock. The shares are available for purchase by the Plan. During 1998, the board of directors of the Employer elected to amend and restate the Plan in order to terminate the relationship between the Custodian and the Plan. As of July 1, 1998, Diversified Investment Advisors held the plan assets, executed investment transactions, received the plan contributions, and performed other custodial duties. Eligibility - An employee is eligible to participate in the Plan following the completion of six months of service and attainment of age twenty-one. Contributions - Employees participating in the Plan elect to have 1% to 16% of their salaries deferred and contributed to the Plan. For each employee who participated in the Plan during 1998, the Company made matching contributions equal to 50% of the first 5% of salary deferred by the participants. At its discretion, the Company may contribute to the Plan a discretionary profit-sharing contribution, which shall be in addition to the company matching contribution. No discretionary contributions were made in 1998. Vesting - Employees are always 100% vested in their individual accounts. Retirement Date - The normal retirement date is the first day of the calendar month following the date a participant reaches age 62. Early retirement is permitted after a participant reaches age 59-1/2. Benefits - Benefits commence upon one of several dates: normal retirement, early retirement, date of disability, pre-retirement death, and upon termination other than described above. 4 Notes to Financial Statements, Continued Benefits are distributed under one of two options: a. By lump sum payment, or b. By one of various conventional annuity options. Other - The Plan allows for participant hardship withdrawals at any time if certain conditions are met. Plan Termination - While it is the intention of the Company to permanently continue the Plan, the Company has the right to terminate the Plan at any time upon written notice to the Savings Committee and to the Custodian. Participant Loans - Participants may borrow from their fund accounts a minimum of $1,000 up to a maximum equal to the lesser of $50,000 or 50% of their account balance. Loan transactions are treated as transfers between the investment fund and the participant loan fund. Loan terms range from one to five years unless such loan is used to acquire a principal residence. The loans are collateralized by the balance in the participant's account and bear interest at a rate commensurate with local prevailing rates as determined quarterly by the plan administrator. Interest rates range from 7% to 10%. 2. Summary of Significant Accounting Policies The following is a summary of accounting policies utilized in the financial statements which were prepared in accordance with generally accepted accounting principles. Method of Accounting - The accounting records of the Plan are maintained on the accrual basis. Investments - Investments in pooled separate accounts and unallocated contracts with insurance companies are stated at contract value as determined by the Custodian. Market value of equity securities which are traded on a national exchange are valued at the last reported sales price on the last business day of the Plan year. Purchases and sales of investments are reflected as of the trade date. Dividend and interest income is recorded when earned. The Plan presents, in the statement of changes in net assets available for plan benefits, the net appreciation (depreciation) in the fair value of its investments which consists of the realized gains or losses and the unrealized appreciation (depreciation) on those investments. Contributions - Contributions from the Employer are accrued based on amounts declared by the Company's Savings Committee. Contributions from employees are recorded in the period in which the Company makes the deductions from the participants' payroll. Risks and Uncertainties - The Plan provides for various investment options in any combination of stocks, bonds, fixed income securities, and other investment securities. Investment securities are exposed to various risks, such as interest rate, market, and credit. Due to the level of risk associated with certain investment securities and the level of uncertainty 5 Notes to Financial Statements, Continued related to changes in the value of investment securities, it is at least reasonably possible that changes in risks in the near term would materially affect participants' account balances and the amounts reported in the statement of net assets available for plan benefits and the statement of changes in net assets available for plan benefits. Use of Estimates - The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of additions and deductions during the reporting periods. Actual results could differ from those estimates. 3. Investment Programs Each participant directs how contributions made by the participant and by the Company on his/her behalf are to be invested among the investment options available under the Plan. The following options were available at December 31, 1998 and 1997: Stable Fund - This fund is invested primarily in bonds and mortgages and other long-term securities. Contributions to this fund will earn a fixed rate of interest that is determined by the Custodian (6.0% for contributions received between January 1, 1998 and December 31, 1998) and may be changed within limits stated in the contract. Money Market Fund - This fund is invested primarily in securities that mature in one year or less without any guarantee of performance. Equity Income Fund - This fund is invested primarily in common stock which emphasizes relatively high current yields and capital appreciation. Growth and Income Fund - This fund is invested in a diversified portfolio of common stocks with potential for above average growth in earnings and dividends. Current income is a secondary objective. Special Equity Fund - This fund is primarily invested in a diversified portfolio of common stock issued by small to medium sized market capitalization companies. The objective of this fund is to seek a high level of capital appreciation. Intermediate Government Bond Fund - The objective of this fund is to seek high current income over the intermediate term, consistent with preservation of capital, through investment in highly-rated debt securities. Balanced Fund - This fund is invested in stocks, bonds, and cash which seek to offer diversification and reduced risk. Government/Corporate Bond Fund - This fund is primarily invested in U.S. Government, investment grade corporate, and mortgage-backed securities with an average maturity of five to fifteen years. 6 Notes to Financial Statements, Continued Short Horizon Strategic Allocation Fund (SAF) - This fund is invested primarily in fixed income securities. The investment objective is to emphasize consistent returns and the preservation of capital while outperforming Lehman Brothers Government/Corporate index. Intermediate Horizon Strategic Allocation Fund (SAF) - This fund is invested primarily in fixed income and equity securities. The investment objective is to emphasize capital appreciation in the equity market and stability in the fixed income market while outperforming an investment mix of 50% S&P 500 and 50% Lehman Brothers Government/Corporate Indices. Intermediate/Long Horizon Strategic Allocation Fund (SAF) -This fund is invested primarily in equity securities. The investment objective is to emphasize greater long-term capital appreciation while outperforming the S&P 500. Government Fixed Fund - This fund is primarily invested in U.S. Government obligations. Contributions to this fund will earn a fixed rate of interest that is determined by the Custodian (5.25% for contributions received between January 1, 1998 and December 31, 1998) and may change within the limits stated in the contract. Stock Index Fund - This fund seeks high long-term return by matching the returns and volatility of the S&P 500 Equity Index. The Fund emphasizes low cost investing through increased portfolio liquidity. ADTRAN, Inc. Stock Fund - This fund primarily invests in ADTRAN, Inc. common stock. The remaining portion of the fund is invested in money market funds to allow for the payment of miscellaneous expenses related to common stock transactions. 7 Notes to Financial Statements, Continued 4. Investments The Plan's investments, other than participant loans and the ADTRAN stock fund, are in unallocated contracts or pooled separate accounts sponsored by the Custodian. Investments as of December 31, 1998 and 1997 and investment information for the year ended December 31, 1998 are as follows: Contract Value Unit Value at Units at at December 31, December 31, December 31, Description 1998 1998 1998 ----------- -------------- ------------ ------------ Unallocated contracts: Stable fund $ 2,510,739 Pooled separate accounts: Money market fund 366,562 14,082 $ 26 Equity income fund 2,757,748 33,591 $ 82 Growth and income fund 3,122,701 51,636 $ 60 Special equity fund 3,493,696 59,066 $ 59 Intermediate government bond fund 623,948 30,010 $ 21 Balanced fund 2,369,256 85,643 $ 28 Government/Corporate bond fund 137,543 7,538 $ 18 Short horizon SAF fund 76,207 5,088 $ 15 Intermediate horizon SAF fund 751,679 39,103 $ 19 Inter/Long horizon SAF fund 1,327,303 55,548 $ 24 Government fixed fund 783,243 Stock index fund 261,480 8,993 $ 29 ADTRAN stock fund 178,173 25,192 $ 7 Participant loans 923,728 -------------- Total investments $ 19,684,006 ============== Contract Value Unit Value at Units at at December 31, December 31, December 31, Description 1997 1997 1997 ----------- -------------- ------------ ------------ Unallocated contracts: Stable fund $ 2,057,596 Pooled separate accounts: Money market fund 272,050 10,964.7 $ 25 Equity income fund 2,096,690 28,716.5 $ 73 Growth and income fund 1,675,383 37,283.2 $ 45 Special equity fund 2,823,717 49,178.3 $ 52 Intermediate government bond fund 364,010 18,638.4 $ 20 Balanced fund 1,930,278 77,999.2 $ 25 Short horizon SAF fund 47,958 3,399.3 $ 14 Intermediate horizon SAF fund 597,625 34,948.6 $ 17 Inter/Long horizon SAF fund 964,212 46,165.5 $ 21 ADTRAN stock fund 104,462 Government fixed fund 710,465 Participant loans 842,035 -------------- Total Investments $ 14,488,481 ============== 8 Notes to Financial Statements, Continued 1998 Interest and dividend income $ 241,858 ========== Net appreciation in fair value of investments $1,568,869 ========== The following is a summary of assets held in excess of 5% of the Plan's net assets available for plan benefits at December 31, 1998 and 1997: 1998 1997 Stable fund $2,510,739 $2,057,596 Equity Income fund $2,757,748 $2,096,690 Growth and Income fund $3,122,701 $1,675,383 Special Equity fund $3,493,696 $2,823,717 Balanced fund $2,369,256 $1,930,278 SAF Aggressive $1,327,303 $ 964,212 Participant loans $ 923,728 $ 842,035 The Plan's investments (including bought and sold, as well as held, during the year) appreciated in value by $1,568,869 during the year ended December 31, 1998, as follows: Pooled separate accounts $1,542,671 ADTRAN stock fund 26,198 ---------- $1,568,869 ========== 9 Notes to Financial Statements, Continued 5. Allocation of Net Assets Available for Plan Benefits and Changes in Net Assets Available for Plan Benefits The allocation of net assets available for plan benefits and changes in net assets available for plan benefits to the Plan's separate investment programs as of December 31, 1998 and 1997 and for the year ended December 31, 1998 is as follows: Growth Intermediate Government/ Money Equity and Special Government Corporate Stable Market Income Income Equity Bond Balanced Bond 1998 Fund Fund Fund Fund Fund Fund Fund Fund ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------- Investments $2,510,739 $ 366,562 $2,757,748 $3,122,701 $3,493,696 $ 623,948 $2,369,256 $ 137,543 Contributions receivable: Employer 1,731 256 1,924 2,179 2,438 435 1,653 96 Employee 4,832 714 5,370 6,080 6,802 1,215 4,613 268 Net assets ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------- available for plan benefits $2,517,302 $ 367,532 $2,765,042 $3,130,960 $3,502,936 $ 625,598 $2,375,522 $ 137,907 ========== ========== ========== ========== ========== ========== ========== =========== Short Intermediate Inter/Long Horizon Horizon Horizon ADTRAN Stock Government SAF SAF SAF Stock Index Fixed Participant 1998 Fund Fund Fund Fund Fund Fund Loans Total ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------- Investments $ 76,207 $ 751,679 $1,327,303 $ 178,173 $ 261,480 $ 783,243 $ 923,728 $19,684,006 Contributions receivable: Employer 53 524 927 124 182 546 0 13,068 Employee 148 1,464 2,584 347 509 1,525 0 36,471 Net assets ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------- available for plan benefits $ 76,408 $ 753,667 $1,330,814 $ 178,644 $ 262,171 $ 785,314 $ 923,728 $19,733,545 ========== ========== ========== ========== ========== ========== ========== =========== 10 Notes to Financial Statements, Continued Growth Money Equity and Special Stable Market Income Income Equity 1997 Fund Fund Fund Fund Fund ----------- ----------- ----------- ----------- ----------- Investments $ 2,057,596 $ 272,050 $ 2,096,690 $ 1,675,383 $ 2,823,717 Contributions receivable: Employer 5,045 674 5,199 4,154 7,001 Employee 14,933 1,996 15,387 12,295 20,723 ----------- ----------- ----------- ----------- ----------- Net assets available for plan benefits $ 2,077,574 $ 274,720 $ 2,117,276 $ 1,691,832 $ 2,851,441 =========== =========== =========== =========== =========== Intermediate Government Bond Balanced SAF SAF SAF Fund Fund Conservative Moderate Aggressive ----------- ----------- ------------ ----------- ----------- Investments $ 364,010 $ 1,930,278 $ 47,958 $ 597,625 $ 964,212 Contributions receivable: Employer 903 4,786 119 1,482 2,391 Employee 2,671 14,166 352 4,386 7,076 ----------- ----------- ------------ ----------- ----------- Net assets available for plan benefits $ 367,584 $ 1,949,230 $ 48,429 $ 603,493 $ 973,679 =========== =========== ============ =========== =========== ADTRAN Government Stock Fixed Participant Fund Fund Loans Total ----------- ----------- ----------- ----------- Investments $ 104,462 $ 710,465 $ 842,035 $14,486,481 Contributions receivable: Employer 259 1,762 33,775 Employee 767 5,214 99,966 ----------- ----------- ----------- ----------- Net assets available for plan benefits $ 105,488 $ 717,441 $ 842,035 $14,620,222 =========== =========== =========== =========== 11 Notes To Financial Statements, Continued Growth Intermediate Government Money Equity and Special Government Corporate Stable Market Income Income Equity Bond Balanced Bond 1998 Fund Fund Fund Fund Fund Fund Fund Fund ---------- -------- ---------- ---------- --------- -------- ---------- ----------- Additions to assets attributed to: Investment income: Interest and dividends $ 130,656 Net appreciation (depreciation) in fair market value of investments $ 15,059 $ 282,194 $ 705,487 $ 106,568 $ 27,234 $ 234,067 $ 4,272 Contributions & rollover proceeds 426,701 102,122 602,217 681,849 839,156 137,230 472,585 165,181 Transfers between funds, net 41,792 35,169 (111,236) 182,757 (123,228) 95,074 (152,268) (31,126) ---------- -------- ---------- ---------- ---------- -------- ---------- ----------- Total additions 599,149 152,350 773,175 1,570,093 822,496 259,538 554,384 138,327 Deductions from net assets attributed to: Benefits paid 157,348 59,163 124,087 130,365 170,721 1,149 127,042 345 Administrative expenses 2,073 375 1,322 600 280 375 1,050 75 ---------- -------- ---------- ---------- ---------- -------- ---------- ----------- Net additions 439,728 92,812 647,766 1,439,128 651,495 258,014 426,292 137,907 Net assets available for plan benefits, beginning of year 2,077,574 274,720 2,117,276 1,691,832 2,851,441 367,584 1,949,230 Net assets available for plan benefits, end of year $2,517,302 $367,532 $2,765,042 $3,130,960 $3,502,936 $625,598 $2,375,522 $ 137,907 ========== ======== ========== ========== ========== ======== ========== =========== Short Intermediate Inter/Long Horizon Horizon Horizon ADTRAN Stock Government SAF SAF SAF Stock Index Fixed Participant 1998 Fund Fund Fund Fund Fund Loans Loans Total ---------- -------- ---------- ---------- ---------- -------- ---------- ---------- Additions to assets attributed to: Investment income: $ 36,700 $ 74,502 $ 241,858 Interest and dividends Net appreciation (depreciation) in fair market value of investments $ 3,611 $ 78,966 $ 153,195 $ (67,982) $ 26,198 1,568,869 Contributions & rollover proceeds 25,093 167,238 334,016 136,278 100,621 83,538 4,273,825 Transfers between funds, net 418 (76,343) (32,445) 7,287 137,772 (40,541) 66,918 0 ---------- -------- ---------- ---------- ---------- -------- ---------- ---------- Total additions 29,122 169,861 454,766 75,583 264,591 79,697 141,420 6,084,552 Deductions from net assets attributed to: Benefits paid 993 19,087 97,031 2,427 2,420 11,299 59,727 963,204 Administrative expenses 150 600 600 525 8,025 ---------- -------- ---------- ---------- ---------- -------- ---------- ---------- Net additions 27,979 150,174 357,135 73,156 262,171 67,873 81,693 5,113,323 Net assets available for plan benefits, beginning of year 48,429 603,493 973,679 105,488 717,441 842,035 14,620,222 Net assets available for plan benefits, end of year $ 76,408 $753,667 $1,330,814 $ 178,644 $ 262,171 $785,314 $ 923,728 $19,733,545 ========== ======== ========== ========== ========== ======== ========== =========== 12 Notes to Financial Statements, Continued 6. Income Tax Status The Plan has received a favorable determination letter from the Internal Revenue Service stating that the Plan, as then designed, was in compliance with the applicable requirements of the Internal Revenue Code. Although the Plan has since been amended, the Plan administrator and the Plan's tax counsel believe that the Plan is operating in such a manner so as not to jeopardize its favorable tax status. Therefore, no provision for income taxes has been included in the Plan's financial statements. 7. Comparison of Financial Statements to Form 5500 Annually, the Company files, on behalf of the Plan, an information return (Form 5500) that includes financial information prepared on the basis of cash receipts and disbursements. The accompanying financial statements differ from the Form 5500 primarily due to the accrual of contributions for financial statement reporting purposes. 13 ADTRAN, Inc. 401(k) Employee Savings Plan Item 27a - Schedule of Assets Held for Investment Purposes as of December 31, 1998 c. Description of Investment Including b. Identity of Issuer, Borrower, Maturity Date, Rate of Interest, e. Current a. Lessor or Similar Party Collateral, Par, or Maturity Value d. Cost Value - - ---------------------------------- ----------------------------------------------------- ------------ ---------------- The Mutual Life Insurance Company Unallocated contract with insurance company - * of New York Stable fund $ 2,510,739 $ 2,510,739 The Mutual Life Insurance Company * of New York Pooled separate account - Money market fund 335,051 366,562 The Mutual Life Insurance Company * of New York Pooled separate account - Equity income fund 1,938,688 2,757,748 The Mutual Life Insurance Company * of New York Pooled separate account - Growth and income fund 2,004,781 3,122,701 The Mutual Life Insurance Company * of New York Pooled separate account - Special equity fund 2,591,402 3,493,696 The Mutual Life Insurance Company Pooled separate account - Intermediate * of New York government bond fund 557,781 623,948 The Mutual Life Insurance Company * of New York Pooled separate account - Balanced fund 1,709,393 2,369,256 The Mutual Life Insurance Company * of New York Pooled separate account - Government/Corporate bond 134,298 137,543 The Mutual Life Insurance Company * of New York Pooled separate account - Short horizon SAF 69,116 76,207 The Mutual Life Insurance Company * of New York Pooled separate account - Intermediate horizon SAF 585,079 751,679 The Mutual Life Insurance Company * of New York Pooled separate account - Inter/Long horizon SAF 1,023,983 1,327,303 * Diversified Investment Advisors Pooled separate account - Stock index 235,140 261,480 The Mutual Life Insurance Company * of New York Common stock 260,099 178,173 The Mutual Life Insurance Company * of New York Pooled separate account - Government fixed fund 783,243 783,243 * Diversified Investment Advisors Participant loans - rate of interest: 7%-10% 923,728 923,728 ------------ ---------------- $ 15,662,521 $ 19,684,006 ============ ================ * Party-in-interest to the Plan. 14 ADTRAN, Inc. 401(k) Employee Savings Plan Item 27d - Schedule of Reportable Transactions for the year ended December 31, 1998 I. Single transactions exceeding 5% of assets. NONE II. Series of transactions involving property other than securities. NONE III. Series of transactions of same issue exceeding 5% of assets. Schedule Attached NOTE - Information required in columns e, f, and h is not applicable. IV. Transactions in conjunction with same person involved in reportable single transactions. NONE 15 ADTRAN, Inc. 401(k) Employee Savings Plan Item 27d(III) - Schedule of Reportable Transactions for the year ended December 31, 1998 a. Identity of b. Description c. Purchases d. Sales g. Cost of i. Net Gain ------------------- ----------------- Party Involved of Asset Price Number Price Number Asset (Loss) - -------------------------- ------------------- --------- ------ ------- ------ ---------- ----------- The Mutual Life Insurance Company of New York Stable fund $ 828,936 101 $382,057 68 $382,057 $ - The Mutual Life Insurance Company of New York Equity income fund $ 737,187 64 $358,322 92 $256,784 $101,538 The Mutual Life Insurance Growth and income Company of New York fund $1,013,207 76 $271,376 80 $187,807 $ 83,569 The Mutual Life Insurance Company of New York Special equity fund $1,023,525 68 $460,114 97 $348,918 $111,196 The Mutual Life Insurance Company of New York Balanced fund $ 537,937 40 $333,025 44 $246,812 $ 86,213 16